package com.stepshop.dp.observer;

import java.util.ArrayList;
import java.util.List;

public abstract class AMBookService implements MBookService{
	private List<MsgService> msgs=new ArrayList<MsgService>();
	@Override
	public void add(MsgService ms) {
		msgs.add(ms);
	}

	@Override
	public void del(MsgService ms) {
		msgs.remove(ms);
	}

	@Override
	public void notifyObj() {
	}

	@Override
	public void operate() {
	}

}

